Home / 13,318.04-18,245.69-12,819.56

Finding the Fourth Proportional to 13,318.04, 18,245.69 and 12,819.56

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Solution

The fourth proportional to 13,318.04, 18,245.69 and 12,819.56 is: 17,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.04 : 18,245.69 = 12,819.56 : x
  2. Step 2: Convert to fraction form
    13,318.04/18,245.69 = 12,819.56/x
  3. Step 3: Cross multiply
    13,318.04x = 18,245.69 × 12,819.56
  4. Step 4: Simplify right side
    13,318.04x = 233,901,717.70
  5. Step 5: Solve for x
    x = 233,901,717.70/13,318.04
  6. Step 6: Final answer
    x = 17,562.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.